Method of forming conically-shaped ends upon rollers and other objects.



N0..891,992. PATENTED JUNE 30, 1908. H. HESS. METHOD OF FORMING GONIOALLY SHAPED ENDS UPON ROLLERS AND OTHER OBJECTS. APPLIOATION FILED JUNE 21, 1907.

nucnlo ,7 ENRYHESS 9331A. flatten new \lwx W) (gimba s n00 UNITED STATES PATENT orr rcn HENRY HESS, OF WAWA, PENNSYLVANIA.

METHOD OF FORMING GONICALLY-SHAPED ENDS UPON ROLLERS AND OTHER OBJECTS.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed June 27, mm. Serial No. 381,138.

g My invention relates to a method of form ing conically-shaped ends upon rollers and other objects, and is more particularly disclosed herein in connection with the formation of such crowns or apices upon the rollers used in the journal bearings illustrated in my application for Letters-Patent executed as of even date herewith. It will be obvious, however, that the method is capable of far broader application, and in fact may be em ployed to produce ends shaped as cones, or as the frusta of cones, upon any desired objects.

Referring to the form of rollers previously mentioned, it will be seen that in order to obtain the greatest accuracy and uniformity, and the least resistance and wear, it is essential that'their conically-shaped ends shall be absolutely true and similar, and that the axial len th ofthe rollers, namely from the if) crown to the center of the roller at the other end, shall be exactly the same .in all. These results I secure by forming the crowns by the method now to be described. Referring to the drawing, Figure 1 is a perspective view, partly in section, of a portion of a machine designed to carry out my method, and Fi 2 is a transverse sectional view thereof, talien substantially on the line 2+2 lIl 1.

As illustrated. in the drawing, the rollers A'A are conically-shaped as to their general outline, as in my other case previously mentioned, and it is desired to form their crowns or ends aa also as cones. The general conical conformation of the rollers AA, is, however, not essential to the employment of my method, which is designed generically for the production of conical apices upon any objects Where they may be desired.

The rollers AA are mounted in series bctween a ring C and an internal rotatable disk B, the ring and disk being suitably shaped to correspond exactly to the rollers AA, and by disposing the rollers in the manner indicated, they are brought into proper angular position to be subjected to the action of the grinding tool D.

The tool D may be rotated in any desired manner, such for instance as by the connections indicated in Fig. 1, so that it may exert its grinding action upon the rollers A-A, and devices may also be.employed to insure the necessary and proper contact of the tool with the work. 1

The disk B is shown as provided with suitable gearing whereby it may be rotated, and thereby, because of its contact with the rollers A-A, the latter are also caused to rotate individually, so as to present successively and continuously all portions of their crowns (1-0 to the action of the tool D. As-shown in the drawing, these rollers A-A are mounted in the machine in substantially the angular relation to each other that they occupy in.

the bearing, and it will be seen that by the employment of my method, absolute uniformity is secured as to the axial length of the rollers, and also the exact similarity of the conical ends formed thereon.

It will be obvious that my improved method may be em loyed in many different ways, either by mac inery equivalent to that illustrated in the drawing, or by hand, without departing from the spirit of my invention. Thus, for instance, the rollers need not be arranged in the exact angular relation previously described, all that is essential in this res ect beingthat the angular relation adopte should be the one calculated to give the desired pitch to the crowns. As previously pointed out, also, the main portion ofthe object operated u on need not be conical, as in the particu ar illustration given. Again, the internal disk B might remain stationary, and the external ring C be rotated;

the particular means employed for forming the conical ends may be entirely differentfrom that herein disclosed, and such means mi ht cdnsist of milling tools, wood-working too s, etc., etc., dependent upon the material employed and the nature of the result de sired. These and many other variations .will

suggest themselves to those skilled in theart,

and l regard them all as com riscd within the scope of my invention, whic in its broad terms; consists in the method of mounting a plurality of the objects to be operated upon in proper angular position, rotating them in dividuelly, and simultaneously applying the- 10 United Stetes'is as follows:

1. The method of forming comically-shaped ends upon rollers, consisting of mountin a plurality of the rollers in circular series an in the desired angular position, rotating the 15 rollers individually, and simultaneously applying the forming tool to all the ends thereof.

2 l The method of forming conicslly-sheped ends upon rollers for journal bearings, consisting of mounting a plural ty of rollers 111 the angular relation they occupy in thebear:

ing, rotating the rollers individually, and

applying the forming tool tothe ends thereof While thus rotated.

In testimony whereof I have eflixedmy 25 signature in presence of two Witnesses.

HENRY HESS.

Witnesses:

NETTIE L. HAHN, C. D. MOALLA. 

